1.1 本试验方法涵盖了使用微投影仪测定羊毛和其他动物纤维（如马海毛、羊绒、羊驼、骆驼毛等）的平均纤维直径和纤维直径变化的程序( 注1 )以其各种形式。 1.2 以英寸-磅单位表示的数值应视为标准值。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 注1: 本试验方法也可应用于具有圆形横截面的任何纤维，因此可多次用于熔融- 纺制的人造纤维，如聚酰胺、聚酯和玻璃；也可应用于有限数量的聚丙烯和再生纤维素型纤维。中给出的值 附录X1 然而，密度和校正系数仅适用于羊毛，不应用于其他纤维。有关其他纤维密度的合适值，请参见试验方法中的表5 D629 纺织品的定量分析。 注2: 在本试验方法的后续章节中，如果情况适用，术语“羊毛”也表示马海毛或其他纤维。 注3: 有关羊毛、羊毛上衣、马海毛、马海绒上衣、羊驼和羊绒的细度规格，请参阅规格 D3991 和 D3992 规格 D2252 ，测试方法 D2816 . 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ===意义和用途====== 5.1 本试验方法规定了按照试验方法的要求测量动物纤维平均纤维直径和直径变化的取样和试验程序 D2968 . 5.2 测试方法 D2130 对于测试羊毛和其他动物纤维的平均纤维直径，对于商业装运的验收测试来说是令人满意的，因为目前实验室间精度的估计是可接受的，并且该方法已在行业中广泛用于验收测试。 如果在使用该方法进行验收测试时，由于买方和卖方报告的数值差异而产生分歧，则统计偏差（如有），买方实验室和卖方实验室之间的比较应根据从被评估类型的一个材料样本中随机抽取的样本进行测试来确定。

1.1 This test method covers a procedure, using the microprojector, for the determination of the average fiber diameter and the fiber diameter variation on wool and other animal fibers, such as mohair, cashmere, alpaca, camel's hair, etc. ( Note 1 ) in their various forms. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Note 1: This test method may also be applied to any fibers having a round cross section and accordingly may be used many times for melt-spun man-made fibers such as polyamides, polyesters, and glass; also it may be applied to a limited number of polyacrylics and regenerated cellulose type fibers. The values given in Appendix X1 for density and correction factors, however, apply only to wool and should not be used for other fibers. For suitable values for the density of other fibers, see Table 5 in Test Methods D629 , Quantitative Analysis of Textiles. Note 2: In subsequent sections of this test method, the term “wool” also signifies mohair or other fibers if the circumstances are applicable. Note 3: For fineness specifications for wool, wool top, mohair, mohair top, alpaca, and cashmere, refer to Specifications D3991 and D3992 , Specification D2252 , Test Method D2816 . 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method specifies a sampling and testing procedure for the measurement of average fiber diameter and variation in diameter of animal fibers as required in Test Method D2968 . 5.2 Test Method D2130 for testing wool and other animal fibers for average fiber diameter is considered satisfactory for acceptance testing of commercial shipments since current estimates of between-laboratory precision are acceptable and the method has been used extensively in the trade for acceptance testing. In cases of disagreement arising from differences in values reported by the purchaser and the seller when using this method for acceptance testing, the statistical bias, if any, between the laboratory of the purchaser and the laboratory of the seller should be determined with each comparison being based on the testing of specimens randomly drawn from one sample of material of the type being evaluated.